[React.js]useRef

 

 

새로운 Referece 객체를 생성하는 기능
변수가 컴포넌트 내부의 변수로 활용돼 특정 요소 DOM 접근 가능하고 요소 조작도 가능
값이 변하더라도 리렌더링을 유발하지 않음

 

→ 리렌더링을 하고 싶지 않은 경우엔 useRef 
    리렌더링을 하고 싶으면 useState

https://mm-study-front.tistory.com/38

[React.js] State

 

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useRef 선언식은 

import { useRef } from "react";

const 변수명 = useRef()

→결과값 : {current: undefined}

 

값을 주려면 useRef() 괄호 안에 넣어주면 됨

const a = useRef(0)
→결괏값 : {current: 0}